SOLR-5442: Move CHANGES entry to 4.6.1
SOLR-5445: Move CHANGES entry to 4.6.1

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1553943 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5479: Move CHANGES entry to 4.6.1

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1553948 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5532: Move CHANGES entry to 4.6.1

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1553951 13f79535-47bb-0310-9956-ffa450edef68